*{margin: 0 auto;}
a{text-decoration: none;color: #000;}
a:hover{text-decoration: none;color: #000;}
ul li{list-style: none;}
input{border: none;}
.mt{margin-top: 10px;}
.mt20{margin-top: 20px;}
.mt50{margin-top: 50px;}
.mt100{margin-top: 100px;}
.mt150{margin-top: 150px;}
.mt-50{margin-top: -50px;}
.ml{margin-left: 15px;}
.clear{clear: both;}
.fl{float: left;}
.fr{float: right;}

.info{width: 65px;height: 65px;}
ul li{padding:13px;}
.jumbotron{background: #fff;}
.tubiao{
	width:40px;
    height:40px;
    background:#000;
    font-size:20px;
    line-height:40px;
    text-align:center;
    border-radius:40px;
}
.tubiao a{color: #fff;}

.hengxian {  
    position: absolute;  
    text-align: center;  
    min-width: 1170px;  
}  
  
.hengxian div {  
    font-size: 20px;
    line-height: 250px;
    color: #000;
}

/*CSS伪类用法*/
.hengxian div:after, .hengxian div:before {
    background: #E1E1E1;
    content: "";
    height: 2px;
    position: absolute;
    top: 50%;
    width: 43%;
}  
  
/*调整背景横线的左右距离*/
.hengxian div:before {left: 0;}
.hengxian div:after {right: 0;}

.detail{width: 250px;height: 250px;}

input{width: 200px;}
hr{margin-left:-15px;width:503px;border: 1px dashed #e5e5e5;}
textarea{border: none;width: 300px;height: 100px;}